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Other or unknownPart report

2016 Mercedes-Benz GLC 300 Other or unknown Problems

Complaints
21about this part
Share
16%of 134 total for the year
Median mileage
27,926miles
Trend
StableComplaints filed in the last 3 full calendar years are within 25% of the 3 years before.

NHTSA recorded 21 complaints about the other or unknown of the 2016 Mercedes-Benz GLC 300, 16% of the 134 complaints for this model year. Where a mileage was given, the median is 27,926 miles. 1 of these say a crash was involved, according to the filers.

Example complaints

Selected from NHTSA records; personal details are removed. They are consumer reports, not findings.

“My cars front stationary sunroof panel came off completely while driving on the highway. I have called mercedes benz recall department and I have gone to the dealership and the repairs are not variable at the moment due to the recall being pending still. My car is getting wet due to the tropical rain in florida.”

NHTSA complaint #11416399, filed 2021-05, 69 miles

“Since we purchased this car in december 2015, we have had a series of electrical and engine problems that do not seem to fixable by the dealer. The car was serviced (3 years or 30,000 miles) *bf*jb consumer also had issues with faulty radar sensor, power control unit, engine light, and faulty crankcase vent system.”

NHTSA complaint #11266350, filed 2019-10, 27,852 miles

“In motion on the highway the glass sunroof panel detached from the vehicle , there's nothing that I did that could have caused that piece to detach the way it did. I have seen recalls for other model vehicles for Mercedes-Benz for this same reason.”

NHTSA complaint #11331473, filed 2020-06, 35,000 miles

“When I start my car there is strong gas odor in the cabin for the first 3-4 hours of driving. Also there is a moldy smell in the warmer months as well”

NHTSA complaint #11309808, filed 2020-02, 28,000 miles

“At 7:30 am on june 10, 2016, while driving north on rte. 495 in delaware in our 5-month-old mb - glc 300, the panoramic sunroof suddenly and without any warning exploded and shattered outward. The sound was as loud as a bomb. As shown in the photographs, nearly all the sunroof was blown out, with only a little glass remaining around the frame. The shattered glass fragments either flew off or settled on top of the shade screen. We were driving at approximately 65 MPH and there were no cars directly in front of us or behind. …”

NHTSA complaint #10874285, filed 2016-06, 8,300 miles

Related service bulletins

Other or unknown: other model years

YearComplaintsShare of year
2025319%
2024314%
2023916%
2022711%
2021710%
20201521%
20191532%
20182023%
20171313%
20162116%

Other parts of the 2016 Mercedes-Benz GLC 300

Engine
38 complaints
Brakes
27 complaints
Fuel system
21 complaints
Air bags
12 complaints
Electrical system
11 complaints
Steering
7 complaints
Transmission and drivetrain
6 complaints
Seat belts
5 complaints
Visibility (wipers, defrost, mirrors)
5 complaints
Engine cooling
4 complaints
Body and structure
4 complaints
Wheels
4 complaints

← All problems reported for the 2016 Mercedes-Benz GLC 300

About this data. Data from NHTSA (ODI) complaints, recalls, TSBs and investigations, updated Nov 1, 2026. Complaints are unverified consumer reports and may be duplicated or inaccurate.

To check a specific vehicle for open recalls, use its VIN at nhtsa.gov/recalls. Methodology